Heat and Mass Transfer The heat is transferred by conduction, convection and radiation in Boiler furnaces Melting of ice None of these Condensation of steam in condenser Boiler furnaces Melting of ice None of these Condensation of steam in condenser ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The ratio of the thickness of thermal boundary layer to the thickness of hydrodynamic boundary layer is equal to (Prandtl number) n, where n is equal to -1 1 =-2/3 =-1/3 -1 1 =-2/3 =-1/3 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer In a heat exchanger with one fluid evaporating or condensing, the surface area required is least in All of these Counter flow Cross flow Parallel flow All of these Counter flow Cross flow Parallel flow ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The ratio of the emissive power and absorptive power of all bodies is the same and is equal to the emissive power of a perfectly black body. This statement is known as Kirchhoff's law Stefan's law Wien's law Planck's law Kirchhoff's law Stefan's law Wien's law Planck's law ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Which of the following is the case of heat transfer by radiation? Heating of building Cooling of parts in furnace Blast furnace Heat received by a person from fireplace Heating of building Cooling of parts in furnace Blast furnace Heat received by a person from fireplace ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The ratio of the energy absorbed by the body to total energy falling on it is called Emissive power Absorptive power Absorptivity Emissivity Emissive power Absorptive power Absorptivity Emissivity ANSWER DOWNLOAD EXAMIANS APP
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